EM78P468N/EM78P468L

8-Bit Microcontroller

R3

PC A11 A10 A9 A8 A7 ~ A0

Resetv ector

000H

00 PAGE0 0000~03FF

01 PAGE1 0400~07FF

10 PAGE2 0800~0BFF

11 PAGE3 0C00~0FFF

CALL RET RETL RETI

STACK LEVEL 1

STACK LEVEL 2

STACK LEVEL 3

STACK LEVEL 4

STACK LEVEL 5

STACK LEVEL 6

STACK LEVEL 7

STACK LEVEL 8

TCC ov erf lowinterrupt v ector

ExteralINT0 pin interrupt v ector

ExteralINT1 pin interrupt v ector

Counter 1 underf low interrupt v ector

Counter 2 underf low interrupt v ector

high pulse width timer underf low interrupt v ector

low pulse width timer underf low interrupt v ector

Port 6,Port8 pin change wake-up interrupt v ector

On-ChipProgrammemory

003H

006H

009H

00CH

00FH

012H

015H

018H

FFFH

UserMemorySpace

Fig 6-1 Program Counter Organization

ADDRESS

0 0

IAR (Indirect Addressing Register)

0 1

TCC (Time Clock Counter)

0 2

PC (Program Counter)

0 3

SR (Status Register)

0 4

RSR (RAM select register)

R5 bit 0 -> 0

R5 bit 0 -> 1

controlregisterpage0

controlregisterpage1

0 5

PORT5 (Port 5 & IOCPAGE Control)

0 6

PORT6 (Port6 I/O data register)

0 7

PORT7 (Port7 I/O data register)

0 8

PORT8 (Port8 I/O data register)

0 9

LCDCR (LCD control register)

0 A

LCD_ADDR (LCD address)

0 B

LCD_DB (LCD data buffer)

0 C

CNTER (Counter enable register)

0 D

SBPCR (System, Booster , PLL control)

0 E

IRCR (IR, Pin of IR;INT0/1;TCC control)

0 F

ISR (interrupt status register)

1 0

 

 

 

 

P5CR (Port5 I/O & LCD segment control) P6CR (Port6 I/O control register)

P7CR (Port7 I/O control register) P8CR (Port8 I/O control register) RAM_ADDR (128 byte RAM address) RAM_DB (128 byte RAM data buffer) CNT1PR (Counter 1 preset register) CNT2PR (Counter 2 preset register) HPWTPR (High-pulse width timer preset) LPWTPR (Low-pulse width timer preset) IMR (interrupt mask register)

WUCR (Wake up & P5.7 sink current) TCCCR (TCC &INT0 control register) WDTCR (WDT control register)

CNT12CR (Counter 1,2 control register) HLPWTCR (high/low pulse width timer control) P6PH (Port 6 pull-high control register)

P6OD (Port 6 open drain control register) P8PH (Port 8 pull-high control register) P6PL (Port 6 pull-low control register)

 

16 byte common register

1 F

 

2 0

 

bank 0 ~ bank 3

 

 

32 byte common register

3 F

 

LCD RAM 4*32 bits

128 byte data RAM

Fig. 6-2 Data Memory Configuration

Product Specification (V1.5) 02.15.2007

• 7

(This specification is subject to change without further notice)

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IBM MiEM78P468N, MiEM78P468L manual On-ChipProgrammemory
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MiEM78P468L, MiEM78P468N specifications

The IBM MiEM78P468N and MiEM78P468L are advanced integrated circuit solutions that cater primarily to the needs of enterprise-level computing systems. These microprocessors are integral in handling a variety of complex tasks, thereby empowering businesses with the efficiency and speed required in today's fast-paced digital environment.

Both models utilize the cutting-edge 78P architecture, which provides impressive performance capabilities. The MiEM78P468N operates at a clock speed of up to 2.2 GHz, while the MiEM78P468L offers a lower clock speed optimized for energy efficiency. This distinction makes the N version ideal for high-performance applications, whereas the L version appeals to scenarios where power consumption is a critical consideration.

A key characteristic of both models is their multi-core architecture, supporting up to four cores. This feature allows for enhanced parallel processing, enabling the handling of multiple tasks simultaneously—a vital requirement for data-intensive applications. Moreover, the inclusion of advanced cache memory arrangements enhances data retrieval speeds significantly, ensuring that applications run smoothly without performance bottlenecks.

These processors also employ cutting-edge thermal management technologies. The dynamic voltage and frequency scaling (DVFS) capabilities ensure that performance can be adjusted in real-time based on workload requirements, helping to minimize energy consumption. This is particularly beneficial in maintaining optimal operating temperatures and prolonging the lifespan of the hardware.

Another notable feature is support for advanced security protocols. Both models incorporate hardware-based security technologies that safeguard data integrity and protect against unauthorized access. This is becoming increasingly important in today's cybersecurity landscape where businesses must prioritize protecting sensitive information.

Additionally, the IBM MiEM78P468N and MiEM78P468L processors are compatible with a wide range of operating systems, facilitating seamless integration into various IT environments. Their robust architecture supports extensive peripheral interconnect protocols, enhancing expandability and connectivity options.

In summary, the IBM MiEM78P468N and MiEM78P468L processors stand out for their performance capabilities, energy efficiency, advanced security features, and versatility. They are well-suited for organizations looking to enhance their computing power while maintaining a balance between performance and power consumption. These microprocessors are instrumental in driving innovation and efficiency in enterprise computing.
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